12 Days of Christmas
468
99 Bottles of Beer
554
Abundant Numbers
842
Arrows
542
Christmas Trees
761
Divisors
755860
Emirp Numbers
592
Evil Numbers
769946949
800
Fibonacci
786
Fizz Buzz
1,000
Foo Fizz Buzz Bar
888
Happy Numbers
531
Kolakoski Sequence
583
Leap Years
837
Leyland Numbers
700
Look and Say
625
Niven Numbers
808
Odious Numbers
769946949
784
Pangram Grep
983
Pascal’s Triangle
712
Pernicious Numbers
453
Prime Numbers
800
Prime Numbers (Long)
826
Quine
615
893
Recamán
718
Sierpiński Triangle
251
Tongue-twisters
573
λ
154
𝑒
463
5089